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If your cat ate wood fern 'the king' — do this now

  1. Take the plant away and clear any pieces from their mouth.
  2. Do not induce vomiting unless told to by a professional.
  3. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 now.

Wood Fern 'The King' is mildly toxic to cats (ASPCA).

Pet emergency

My cat ate Wood Fern 'The King' — what to do

Step by step

  1. Take wood fern 'the king' away and remove any plant material from your cat's mouth so they cannot eat more.
  2. Note roughly how much was eaten and when — this helps the vet judge the risk.
  3. Do NOT induce vomiting unless a vet or poison-control specialist tells you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice.
  5. Watch for drooling, pawing at the mouth, vomiting, loss of appetite, or lethargy, and bring a leaf or photo to the appointment.

This is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide as well as the plant. When in doubt, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435.

My cat ate wood fern 'the king' — FAQ

Is wood fern 'the king' poisonous to cats?

Yes — the ASPCA lists Wood Fern 'The King' (Dryopteris affinis 'The King') as mildly toxic to cats. Dryopteris is not on the ASPCA non-toxic list, and the genus's rhizomes contain filicic acid (filixic acid / filicin) and thiaminase, compounds documented to poison grazing livestock. This cultivar is not individually evaluated by the ASPCA for cats and dogs; treat as mildly toxic, keep pets from chewing it, and consult a vet if ingestion is suspected.

How serious is it if my cat ate wood fern 'the king'?

Wood Fern 'The King' is mildly toxic, so most cats get short-lived mouth irritation, drooling, and vomiting rather than a life-threatening reaction. It is still worth a vet call to be safe, especially if your cat ate a lot or symptoms persist.

What symptoms should I watch for?

Signs usually appear soon after chewing: drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy. Dryopteris is not on the ASPCA non-toxic list, and the genus's rhizomes contain filicic acid (filixic acid / filicin) and thiaminase, compounds documented to poison grazing livestock. This cultivar is not individually evaluated by the ASPCA for cats and dogs; treat as mildly toxic, keep pets from chewing it, and consult a vet if ingestion is suspected. Any worsening or persistent symptoms warrant an immediate vet visit.

Should I make my cat vomit?

No — do not induce vomiting unless a vet or the ASPCA Animal Poison Control Center specifically tells you to. The wrong action can make things worse. Call (888) 426-4435 and follow professional advice.

How do I stop this happening again?

Keep wood fern 'the king' well out of reach, or swap it for an ASPCA non-toxic plant — see the best cats-safe plants list.

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